Nat Parameters - AudioCodes Mediant 4000 SBC User Manual

User's Manual
Parameter
Layer-3 Class of Service (TOS/DiffServ) Parameters
CLI path: configure network > qos application-mapping
Media Premium QoS
media-qos
[PremiumServiceClassMediaDiffServ]
Control Premium QoS
control-qos
[PremiumServiceClassControlDiffServ]
Gold QoS
gold-qos
[GoldServiceClassDiffServ]
Bronze QoS
bronze-qos
[BronzeServiceClassDiffServ]

60.2.5 NAT Parameters

The Network Address Translation (NAT) parameters are described in the table below.
Parameter
NAT Traversal
configure voip > media
settings > disable-NAT-
traversal
[NATMode]
Version 7.2
Global parameter defining the DiffServ value for Premium
Media CoS content.
You can also configure this functionality per specific calls,
using IP Profiles (IpProfile_IPDiffServ). For a detailed
description of the parameter and To configure the
functionality, see ''Configuring IP Profiles'' on page 418.
Note: If the functionality is configured for a specific profile,
the settings of this global parameter is ignored for calls
associated with the profile.
Global parameter defining the DiffServ value for Premium
Control CoS content (Call Control applications).
You can also configure the functionality per specific calls,
using IP Profiles (IpProfile_SigIPDiffServ). For a detailed
description of the parameter and To configure the
functionality in the IP Profiles table, see ''Configuring IP
Profiles'' on page 418 .
Note: If the functionality is configured for a specific profile,
the settings of this global parameter is ignored for calls
associated with the profile.
Defines the DiffServ value for the Gold CoS content
(Streaming applications).
The valid range is 0 to 63. The default is 26.
Defines the DiffServ value for the Bronze CoS content
(OAMP applications).
The valid range is 0 to 63. The default is 10.
Table 60-13: NAT Parameters
Enables the NAT traversal feature for media when the device
communicates with UAs located behind NAT.

[0] Enable NAT Option = NAT traversal is performed only if the UA
is located behind NAT:

UA behind NAT: The device sends the media packets to the IP
address:port obtained from the source address of the first
media packet received from the UA.

UA not behind NAT: The device sends the packets to the IP
address:port specified in the SDP 'c=' line (Connection) of the
first received SIP message.
Note: If the SIP session is established (ACK) and the device (not
the UA) sends the first packet, it sends it to the address obtained
from the SIP message and only after the device receives the first
823
60. Configuration Parameters Reference
Description
Description
Mediant 4000 SBC